other options to handle the geospatial operations in mapserver??

[feigle Dou]

Hi,All！

I want to design a new system to display satellite images through web-gis 
which based on mapserver.  In the old version i use oracle spatial to handle
the geospatial operations,such as such as overlap of two polygons. and use 
php/mapscript to search Oracle spatial .
Now,i want to use a new method to handle the geospatial opetations. 
Does PostGIS,MapInfo or GML(Geography Markup Language) can work for this 
function?  or other database system can work for this function based on 
mapserver as Oracle Spatial do?  Does php/mapscript can work with PostGIS,
MapInfo etc?？

Anyone give me some suggestion?

Any information will be appreciated

thanks a million!

feigle